2) This alkaline food chart is only accurate for certain state of the foods. For example, cooked lettuce has a different pH value compared to a boiled lettuce. 3) The food chart is based on a number of acid alkaline food chart, nutritionists, and doctors.
The definition of the Law of Attraction could be perhaps more easily explained as the Law of Vibration. Another definition of the Law of Attraction says that with syncronicity, we attract from the outside what you resonate with, on the inside.
Charge is a property which defines the force that a particle will exert on other charged particles. There is a well known saying that applies perfectly: Opposites attract. (Likewise, like charges repel.) Positive charges and negative charges will attract each other and come together.